<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
				.da1{
					width: 200px;
					height: 200px;
					background-color: yellow;
				/*绝对定位*/
					position: absolute;
					top: 50px;
					left:50px;
				}
				.da2{
					width: 200px;
					height: 200px;
					background-color: green;
				}
		</style>
	</head>
	<body>
		<div class="da1">
			1
		</div>
		<div class="da2">
			2
		</div>
	</body>
</html>
